adjective 1. resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis: a pinnate branch; pinnate trees. 2. Botany. (of a leaf) having leaflets or primary divisions arranged on each side of a common stalk. /ˈpɪneɪt; ˈpɪnɪt/adjective 1. like a feather in appearance 2. (of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stemadj.

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